One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(9,10)(11,13)(12,14)(15,16)(18,22)(20,28)(23,30)(24,29)(25,31)(27,32)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16) involution — undirected(9,11)(10,13)(12,16)(14,15)(17,18,21,24)(19,25,26,23)(20,29,28,22)(27,30,32,31)(3,8)(5,7)(11,16)(13,15)(17,19,21,26)(18,23,24,25)(20,27,28,32)(22,30,29,31)(10,14)(13,15)(19,26)(23,25)(27,32)(30,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.